policy_module(bind,1.0)

########################################

#

# Declarations

#

# for DNSSEC key files

type dnssec_t; #, secure_file_type;

files_type(dnssec_t)

type named_t;

type named_exec_t;

init_daemon_domain(named_t,named_exec_t)

role system_r types named_t;

# A type for configuration files of named.

type named_conf_t;

files_type(named_conf_t)

# for secondary zone files

type named_cache_t;

files_type(named_cache_t)

type named_tmp_t;

files_tmp_file(named_tmp_t)

type named_var_run_t;

files_pid_file(named_var_run_t)

# for primary zone files

type named_zone_t;

files_type(named_zone_t)

type ndc_t;

type ndc_exec_t;

init_system_domain(ndc_t,ndc_exec_t)

role system_r types ndc_t;

########################################

#

# Named local policy

#

allow named_t self:capability { chown dac_override fowner setgid setuid sys_chroot sys_nice sys_resource };

dontaudit named_t self:capability sys_tty_config;

allow named_t self:process { setsched setcap setrlimit };

allow named_t self:fifo_file rw_file_perms;

allow named_t self:unix_stream_socket create_stream_socket_perms;

allow named_t self:unix_dgram_socket create_socket_perms;

allow named_t self:tcp_socket create_stream_socket_perms;

allow named_t self:udp_socket create_socket_perms;

allow named_t self:netlink_route_socket r_netlink_socket_perms;

allow named_t dnssec_t:file { getattr read };

# read configuration

allow named_t named_conf_t:dir r_dir_perms;

allow named_t named_conf_t:file r_file_perms;

allow named_t named_conf_t:lnk_file r_file_perms;

# write cache for secondary zones

allow named_t named_cache_t:dir rw_dir_perms;

allow named_t named_cache_t:file create_file_perms;

allow named_t named_cache_t:lnk_file create_lnk_perms;

can_exec(named_t, named_exec_t)

allow named_t named_tmp_t:dir create_dir_perms;

allow named_t named_tmp_t:file create_file_perms;

files_create_tmp_files(named_t, named_tmp_t, { file dir })

allow named_t named_var_run_t:file create_file_perms;

allow named_t named_var_run_t:sock_file create_file_perms;

files_create_pid(named_t,named_var_run_t,{ file sock_file })

# read zone files

allow named_t named_zone_t:dir r_dir_perms;

allow named_t named_zone_t:file r_file_perms;

allow named_t named_zone_t:lnk_file r_file_perms;

allow named_t ndc_t:tcp_socket { acceptfrom recvfrom };

kernel_read_kernel_sysctl(named_t)

kernel_read_system_state(named_t)

kernel_read_network_state(named_t)

kernel_tcp_recvfrom(named_t)

corenet_tcp_sendrecv_all_if(named_t)

corenet_raw_sendrecv_all_if(named_t)

corenet_udp_sendrecv_all_if(named_t)

corenet_tcp_sendrecv_all_nodes(named_t)

corenet_udp_sendrecv_all_nodes(named_t)

corenet_raw_sendrecv_all_nodes(named_t)

corenet_tcp_sendrecv_all_ports(named_t)

corenet_udp_sendrecv_all_ports(named_t)

corenet_tcp_bind_all_nodes(named_t)

corenet_udp_bind_all_nodes(named_t)

corenet_tcp_bind_dns_port(named_t)

corenet_udp_bind_dns_port(named_t)

#corenet_tcp_bind_rndc_port(named_t)

dev_read_sysfs(named_t)

dev_read_rand(named_t)

fs_getattr_all_fs(named_t)

fs_search_auto_mountpoints(named_t)

term_dontaudit_use_console(named_t)

corecmd_search_sbin(named_t)

domain_use_wide_inherit_fd(named_t)

files_read_etc_files(named_t)

files_read_etc_runtime_files(named_t)

init_use_fd(named_t)

init_use_script_pty(named_t)

libs_use_ld_so(named_t)

libs_use_shared_libs(named_t)

logging_send_syslog_msg(named_t)

miscfiles_read_localization(named_t)

sysnet_read_config(named_t)

userdom_dontaudit_use_unpriv_user_fd(named_t)

userdom_dontaudit_search_sysadm_home_dir(named_t)

ifdef(`targeted_policy',`

	term_dontaudit_use_unallocated_tty(named_t)

	term_dontaudit_use_generic_pty(named_t)

	files_dontaudit_read_root_file(named_t)

	#dontaudit ndc_t unlabeled_t:file { getattr read };	

')

optional_policy(`nis.te',`

	nis_use_ypbind(named_t)

')

optional_policy(`nscd.te',`

	nscd_use_socket(named_t)

')

optional_policy(`rhgb.te',`

	rhgb_domain(named_t)

')

optional_policy(`selinuxutil.te',`

	seutil_sigchld_newrole(named_t)

')

optional_policy(`udev.te',`

	udev_read_db(named_t)

')

########################################

#

# NDC local policy

#

# cjp: why net_admin?!

allow ndc_t self:capability { dac_override net_admin };

allow ndc_t self:process { fork signal_perms };

allow ndc_t self:fifo_file { read write getattr ioctl };

allow ndc_t self:unix_stream_socket { connect create_stream_socket_perms };

allow ndc_t self:tcp_socket create_socket_perms;

allow ndc_t self:netlink_route_socket r_netlink_socket_perms;

allow ndc_t dnssec_t:file { getattr read };

allow ndc_t named_t:tcp_socket { connectto recvfrom };

allow ndc_t named_t:unix_stream_socket connectto;

allow ndc_t named_conf_t:file { getattr read };

allow ndc_t named_var_run_t:sock_file rw_file_perms;

allow ndc_t named_zone_t:dir search;

kernel_read_kernel_sysctl(ndc_t)

kernel_tcp_recvfrom(ndc_t)

corenet_tcp_sendrecv_all_if(ndc_t)

corenet_raw_sendrecv_all_if(ndc_t)

corenet_tcp_sendrecv_all_nodes(ndc_t)

corenet_raw_sendrecv_all_nodes(ndc_t)

corenet_tcp_sendrecv_all_ports(ndc_t)

corenet_tcp_bind_all_nodes(ndc_t)

fs_getattr_xattr_fs(ndc_t)

domain_use_wide_inherit_fd(ndc_t)

files_read_etc_files(ndc_t)

files_search_pids(ndc_t)

init_use_fd(ndc_t)

init_use_script_pty(ndc_t)

libs_use_ld_so(ndc_t)

libs_use_shared_libs(ndc_t)

logging_send_syslog_msg(ndc_t)

miscfiles_read_localization(ndc_t)

sysnet_read_config(ndc_t)

# for /etc/rndc.key

ifdef(`distro_redhat',`

	allow ndc_t named_conf_t:dir search;

')

tunable_policy(`use_dns',`

	allow ndc_t self:udp_socket create_socket_perms;

	corenet_udp_sendrecv_all_if(ndc_t)

	corenet_udp_sendrecv_all_nodes(ndc_t)

	corenet_udp_sendrecv_dns_port(ndc_t)

	corenet_udp_bind_all_nodes(ndc_t)

')

tunable_policy(`named_write_master_zones',`

	allow named_t named_zone_t:dir create_dir_perms;

	allow named_t named_zone_t:file create_file_perms;

	allow named_t named_zone_t:lnk_file create_lnk_perms;

')

optional_policy(`mount.te',`

	mount_send_nfs_client_request(named_t)

')

optional_policy(`nis.te',`

	nis_use_ypbind(ndc_t)

')

optional_policy(`nscd.te',`

	nscd_use_socket(ndc_t)

')

ifdef(`TODO',`

can_udp_send(domain, named_t)

can_udp_send(named_t, domain)

can_tcp_connect(domain, named_t)

')